Large tilting gravity die casting process is adopted to produce tank body and conductor castings in power transmission and transformation equipment in high-voltage switch gear industry, which can realize mass, efficient and high-quality production, with metal utilization rate of more than 75%, actual productivity of about 8 pieces / hour and casting yield of more than 95%.
The basic working principle of large tilting gravity die casting machine (GDC machine)is that the casting machine completes the die closing action in the horizontal or vertical direction, completes the tilting pouring process driven by the tilting cylinder, reversely tilts the casting after solidification, completes the die opening action in the horizontal or vertical direction, then ejects the casting under the function of the ejector cylinder, and finally manually takes out the casting to complete a working cycle. Equipment for producing aluminum alloy castings for high voltage switches by this process.
Advantages:
(1) The production of aluminum alloy castings for high voltage switches by tilting gravity die casting machine is an efficient and energy-saving process. Compared with resin sand molding process, it has the advantages of small floor area, high production efficiency and low investment cost.
(2) Due to the high degree of automation, it not only improves productivity, but also improves the working environment of workers.
(3) Due to the strong manufacturability of the equipment structure, the freedom of die design is large, which provides a favorable guarantee for reducing the scrap rate of castings and producing difficult and complex castings.
(4) The mechanical properties, dimensional accuracy and surface quality of castings produced by metal die tilting pouring instead of ordinary sand casting are greatly improved.
